{"product_id":"general-purpose-cleaning-solution-230-ml-hanna-instruments-hi7061m","title":"General Purpose Cleaning Solution, 230 mL, Hanna Instruments, HI7061M","description":"\u003cp\u003e\u003cstrong\u003eHanna Instruments® General Purpose Cleaning Solution, 230 mL, HI7061M\u003c\/strong\u003e\u003c\/p\u003e \u003cp\u003e\u003cstrong\u003eFeatures:\u003c\/strong\u003e\u003c\/p\u003e \u003cul\u003e \u003cli\u003eAppearance:  colorless liquid\u003c\/li\u003e \u003cli\u003eCAS Nos.:  Components of mixture at non-reportable levels\u003c\/li\u003e \u003cli\u003eClean the liquid junctions of pH electrodes to prevent clogging and to maintain accuracy\u003c\/li\u003e \u003cli\u003eMaintenance can be performed once daily or at least once per week by immersing electrode in cleaning solution for about 15 to 20 minutes, eliminating dirt or other deposits from electrode\u003c\/li\u003e \u003cli\u003eMost common cause for pH measurement inaccuricies is unclean or improperly cleaned electrode\u003c\/li\u003e \u003cli\u003eThis is very important to note, because during calibration, instrument assumes that electrode is clean and that standaridation curve created during calibration process will remain valid reference until next calibration\u003c\/li\u003e \u003cli\u003epH meters will allow an offset voltage of approximately ± 60mV\u003c\/li\u003e \u003cli\u003edeviation from 0 mV is not unusual but ideally should be no greater than ± 30 mV\u003c\/li\u003e \u003cli\u003eCalibration process compensates for change in offset voltage\u003c\/li\u003e \u003cli\u003eIf the mV offset continues to deviate and meter is calibrated with dirty electrode then inaccurate readings will result\u003c\/li\u003e \u003cli\u003eIn time, particles during routine measurement can contaminate sensor tip\u003c\/li\u003e \u003cli\u003eMishandled and aged solutions can also be affected\u003c\/li\u003e \u003cli\u003eMeter can still be calibrated even if electrode sensor tip is not properly cleaned before calibration\u003c\/li\u003e \u003cli\u003eIf the contamination dissipates due to rinsing after calibration, then calibration is no longer valid and  readings are inaccurate\u003c\/li\u003e \u003cli\u003eProper cleaning and fresh solution ensures whole surface of sensor tip is reading correctly, ensuring  accurate calibration and accurate readings\u003c\/li\u003e \u003cli\u003eSpecially formulated for cleaning electrodes\u003c\/li\u003e \u003cli\u003eAir tight seal to ensure quality\u003c\/li\u003e \u003cli\u003eExpiration date and lot number stamped on bottle\u003c\/li\u003e \u003c\/ul\u003e","brand":"Hanna Instruments","offers":[{"title":"EA (1)","offer_id":51111185547579,"sku":"92-1624-26-EA","price":18.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0921\/2041\/6571\/files\/92-1624-26_fbf22ad7-62e7-4b5d-8043-b2833da6ea9c.png?v=1784711435","url":"https:\/\/preiser.com\/products\/general-purpose-cleaning-solution-230-ml-hanna-instruments-hi7061m","provider":"Preiser Scientific","version":"1.0","type":"link"}